Brother. According to relevant data, Liu and Liu are two brothers, both of whom entered the table tennis world under the cultivation of their fathers. Liu first joined the China women's table tennis team as a sparring partner, then founded a table tennis club, and served as a coach in Shaanxi Yinhe Club and Shaanxi Liang Dong Club successively. Among them, Hao Shuai and Malone were brought out when they were coaching in Shaanxi Yinhe Guo Liang Club. Liu Yisheng has won numerous honors. He is the first Grand Slam winner in China's men's table tennis history who won the Olympic Games, the World Championships and the World Cup. He used to be the head coach of China Table Tennis Team, and now he is the president of China Table Tennis Association.